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MolNFT v1 · #180938 · protein

Model of MHC class ib H2-M3 with mouse ND1 N-terminal heptapeptide, ala mutant, refined at 1.70 ångströms resolution

7LFJ · Histocompatibility 2, M region locus 3: “Model of MHC class ib H2-M3 with mouse ND1 N-terminal heptapeptide, ala mutant, refined at 1.70 ångströms…”. X-ray diffraction, 2 ligands (NAG, NA), 11 pockets (best druggability 0.76).…

PDB
7LFJ
Type
protein
Length
764 residues
Chains
6
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Histocompatibility 2, M region locus 3; Beta-2-microglobulin; Heptapeptide from…
EC
7.1.1.2
UniProt
Q31093, P01887, P03888
Ligands
NAG, NA
Pockets
11 · best druggability 0.76

Structure

x-ray diffraction · 3 distinct chains · 20% helix, 42% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, DHistocompatibility 2, M region locus 3protein27627% helix, 40% strandQ31093
B, EBeta-2-microglobulinprotein990% helix, 49% strandP01887
C, FHeptapeptide from NADH-ubiquinone oxidoreductase chain 1 (EC 7.1.1.2)protein70% helix, 0% strandP03888

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · chains A
  • NA · Sodium ion · metal · chains A

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

11 pockets found on a 1 Å grid, 7 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
11360.760.9424empty
25310.690.7949empty
36600.680.7768empty
43820.630.7847empty
52420.570.7837empty

Interfaces

7 interfaces between chains.

  • D–E · 1317 Ų buried · 24 hydrogen bonds · protein-protein
  • A–B · 1297 Ų buried · 25 hydrogen bonds · protein-protein
  • A–D · 877 Ų buried · 5 hydrogen bonds · protein-protein
  • A–C · 784 Ų buried · 8 hydrogen bonds · protein-protein
  • D–F · 732 Ų buried · 7 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 6 disulfide, 2 modified, 1 glycan (disulfide, formylation, N-glycosylation).

Compared structures

  • 7LFJ · MODEL OF MHC CLASS Ib H2-M3 WITH MOUSE ND1 N-TERMINAL HEPTAPEPTIDE, ALA MUTANT, REFINED… · the same entry in another collection · chain F against F, TM-score 1.00
  • P01887 · AlphaFold monomer V2.0 prediction for beta-2-microglobulin (P01887) · a predicted model of the same protein · chain E against A, TM-score 0.99
  • P03888 · AlphaFold monomer V2.0 prediction for NADH-ubiquinone oxidoreductase chain 1 (P03888) · a predicted model of the same protein · chain C against A, TM-score 0.46

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